Previous answer is
Mumei (Den Naoe Shizu)
Special feature : The NBTHK judged this unsigned Wakizashi as Den Naoe-Shizu. The name of Naoe-shizu is the general term of the pupils of Shizu Saburo Kaneuji. Shizu the First, Kaneuji was one of the most skillful swordsmiths of the Masamune School. Kanetomo, Kanenobu and Kanetsugu were students of Kaneuji. They moved to Naoe from Shizu in Mino province and forged sword there so they are called Naoe-Shizu. Some of his students gave one’s name as Naoe-Shizu. That is, Kaneuji on and after the second generation, Kanetomo, Kanetsugu, Kanenobu and so on are seemed to correspond to Naoe-Shizu. The style of Naoe-Shizu is that: a compact Nioi-Kuchi and dull activity in the ha compared with Shizu style.
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Appraisal Quiz #525 (February 9th, 2019)
Who made this sword do you think ?
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Hints. ※The picture will be enlarged
Blade length : 46.95 cm or 18.48 inches.
Sori : 0.9 cm or 0.35 inches.
Mekugi : 1
Width at the hamachi : 3.71 cm or 1.46 inches.
Width at the Kissaki : 2.99cm or 1.17 inches.
Kasane : 0.88 cm or 0.34 inches.
Shape : Wide and thick Wakizashi. There are Bo-Hi, Koshi-Hi and Soe-Hi on both side.
Jitetsu : Koitame hada well grained with jinie attached. There is fine chikei works.
Hamon : Nie Deki, Gunome Midare with rather deep Nioiguchi.
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